Jewel-mounting.



W. GODBER.

JEWEL MOUNTING.

APPLICATION FILED MAR.4, 1907v Patented J an. 7. 1913.

UNITED STATES PATEQ .L uiflCE. 4

. V I v f WILLIAM GODBER, OF SOUTH ORANGE, NEW JERSEY, ASBIGNOB WESTINGHOUSIE ELECTRIC 8:: MANUFACTURING COMPANY, A CORPORATION OF PENNSYLVANIA.

JEWEL-MOUNTING.

Specification or Letters Patent.

Application filed Ia'rc'h 4, Serial No. 860,510.

To all whom it may concern:

Be it known that I, WILLIAM Gonnnn,,a citizen of the United States, and aresident of South Orange, in the county of Essex and Staiemf New Jersey, have invented a new and *useful Improvement in Jewel Mountings, of which the following is a specification.

My invention relates to mountings f p-r bearing jewels, and it has for its object to provide a mounting that may be more expeditiously and accurately assembled and. that shall bemore satisfactory in service than. others heretofore employed.

Figure 1 of the accompanying drawing is a view, partially in section and partially in elevation, of parts that embody my inven tion, and Fig. 2 is an enlarged sectional view of some of the parts shown in Fig. l.

A cylindrical stem 1., the upper portion of which is somewhat reduced in diameter and screw-threaded, is provided in its upper end with a drilled recess 2 that is reamed or enlarged to a diameter and depth'sutti- .cient to receive a sapphire or other suitable jewel 3 having a concave upper surface. Threaded upon the reduced portion of the stem 1 is a cap 4 the external surface of which is flush with the shank of the stem. The cap 4 is provided in its upper end with an opening that is of slightly smaller diameter than the external diameter. of'the jewel 3, and its upper face is provided with aslightly concave contour in a manner and for a purpose which will be hereinafter more fully set forth. Bearing upon the concave face of the jewel 3 is a hardened steel ball 5 upon which, in turn, bears an; other jewelG that is mounted, similarly to the jewel 4, in a stem i, the stem being tubular and split for the reception of the lower end of a shaft 8. The shank of the stem 1 is screw-threaded in a suitable sleeve 9 that extends upwardly -around the jewel mountings upon both the stationary and the rotatable members, and thereby serves to retain the shaft 8 in vertical alinernent with the stem 1 and to prevent escape of the ball from between the ewels 3 and 6. The lower end of the stem 1 is provided with a head 10 that is slotted for the reception of the end of a screw-driver, and the screwthreaded portion of the shank isprovided with a lock nut-11 whereby the stem 1 may be retained rigidly in position with reference to the sleeve 9. The sleeve 9 is also ex- Patented Jan. 7,1913.

teriorly screw-threaded in order that it may ..be attached to any suitable part of a device in which the bearing may be employed.

In mounting the jewel, the recess in the upper end of the stem 1 is reamed. or enlarged to the exactdiameter of the jewel and the jewel is placed in position and accurately centered. The cap 4 is then applied, for the purpose of retaining the jewel in position, the upper end of the cap being, before application, of somewhat greater thickness than appears in the drawing. The end of the cap is then turned down to the desired thickness and to the concaveform shown in order that the ball may be caused to roll into the concavity in the jewel and be prevented from bearing upon the ends of the caps.

I claim as my inventi n:

1. The combination with two relatively rotatable members each comprising a jewel having a concave bearing surface, a setting therefor consisting of astem having an end recess in which the jewel is seated and a cap'for the stem having an inwardly projecting end flange which engages the edges of the outer face of the jewel and has a concave surface that merges into the concave surface of the jewel, of a ball interposed between said jewels.

2. The combination with two relatively rotatable members each of which comprises a jewel having a concave face, a setting.

therefor consisting of a stem having an end recess in which the jewel is seated and a cap screw-threaded upon the stem and having a concave outer end provided with an inwardly projecting flange which engages the edgeisf the outer face of the jewel and- The combination with two relatively rotatable members each of which comprises a jewel having a concave outer face, a setting therefor consisting of a support hav ing a recess in which the jewel is seated, and a cap adjustably secured to the support and havlng an outer end provided with a concave face and an inwardly projecting flange which engages the edge of-the outer face of the jewel and merges into its surface, of a ball interposed between said jewels.

In testimony whereof, I have hereunto subscribed my name this 15th day of F eb- Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents,

Washington, D. 0. 

